Module: Mack::ViewHelpers::DataMapperHelpers

Defined in:
lib/mack-data_mapper/helpers/orm_helpers.rb

Constant Summary collapse

DEFAULT_PARTIAL = 
%{
<div class="errorExplanation" id="errorExplanation">
  <h2><%= pluralize_word(errors.size, "error") %> occured.</h2>
  <ul>
    <% for error in errors %>
      <li><%= error %></li>
    <% end %>  
  </ul>
</div>
}.strip

Instance Method Summary collapse

Instance Method Details

#error_messages_for(object_names = [], view_partial = nil) ⇒ Object

Provides view level support for printing out all the errors associated with the models you tell it. The DEFAULT_PARTIAL constant provides a simple, default, set of HTML for displaying the errors. If you wish to change this HTML there are two simple ways of doing it. First if you have a partial named: app/views/application/_error_messages.html.erb, then it will use that default, and not DEFAULT_PARTIAL. The other option is to pass in a path to partial as the second argument and that partial will be rendered.



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# File 'lib/mack-data_mapper/helpers/orm_helpers.rb', line 23

def error_messages_for(object_names = [], view_partial = nil)
  object_names = [object_names].flatten
  app_errors = []
  object_names.each do |name|
    object = instance_variable_get("@#{name}")
    if object
      if object.respond_to?(:errors)
        if object.errors.respond_to?(:full_messages)
          app_errors << object.errors.full_messages.uniq
        end
      end
    end
  end
  app_errors.flatten!
  unless app_errors.empty?
    if view_partial.nil?
      if File.exist?(Mack::Paths.views("application", "_error_messages.html.erb"))
        render(:partial, "application/error_messages", :locals => {:errors => app_errors})
      else
        render(:inline, DEFAULT_PARTIAL, :locals => {:errors => app_errors})
      end
    else
      render(:partial, view_partial, :locals => {:errors => app_errors})
    end
  else
    ""
  end
end